An important aspect of planning for shallow tunneling under urban areas is the determination of likely surface movements and interaction with existing structures. Back analysis of built tunnels that their settlements magnitude is available, could aid the designers to have a more accuracy in future projects. In this paper, one single Tehran Metro Tunnel (at west of Hor square, Jang University St...

This paper presents the results of engineering geological studies of rock blocks along a road tunnel in NW Iran. The tunnel is to cross the Western Alborz Mountain Range through 530 m in length with 11.2 m span and 8 m height. Eocene tuffs and andesites crop out in whole of the tunnel route. Numerical analyses are done using, a 3D stability analysis and visualization program, called Unwedge tha...

The induced cracks on the concrete lining of the intake pressure tunnels may cause the water seep into the surrounding media leading to develop a hydro pressure on the external surface of the lining. In the common design practice, the lining can be designed to tolerate with this pressure using the Schleiss method. However, when the tunnel is constructed above the underground water, the seepage ...

OBJECTIVE To validate intra- and inter-class correlation coefficients of a transparent 3D-TC protocol and investigate relationships between different axial rotations. METHODS Twenty unilateral knee TCs (iSite - Philips) were evaluated by means of a transparent 3D-TC OsiriX Imaging Software (v.3.9.4), 3D MPR protocol. Mathematical model of femoral tunnel projections acquired on vertical and ho...

ABSTRAKFondasi grup tiang adalah jenis fondasi yang umum digunakan pada struktur jembatan. Salah satu perlu diperhatikan dalam analisis suatu penurunan dapat terjadi tersebut. Penurunan karena lapisan tanah mengalami pembebanan akibat beban diperoleh mengakibatkan terjadinya elevasi dasar. Penelitian ini bertujuan untuk melakukan perbandingan program Plaxis 3D dan Settle3D. Analisis juga dilaku...

Salah satu solusi untuk teknik perbaikan tanah di proyek reklamasi belawan phase I adalah dengan Preloading yang melakukan suatu kombinasi Prefabricated Vertical Drain (PVD). Metode ini dipilih karena dianggap efektif dalam mempercepat konsolidasi tanah. Serta mampu mengurangi total waktu diperlukan proses pemadatan oleh preloding. Berkaitan hal tersebut PVD juga dapat beban tambahan dibutuhkan...

Tunnel accident is apt to become a serious disaster when it occurs. But tunnel construction is being increased rapidly in Korea because tunnel has advantages and usefulness. According to Korean Ministry of Land, Transport and Maritime Affairs, total length of road tunnels was extended from 150 km to 648 km for last decade (333% increased). On the other hand there are several tunnels aged about ...